The phrase evokes an image of a garment possessing the color and quality of a clear, bright sky. It suggests something beautiful, ethereal, and possibly associated with royalty or high status, given the connotation of a “robe.” The description implies a visually striking item of clothing.
Historically, associating fabrics and garments with the sky’s color has signified divinity, power, and wealth across various cultures. Natural dyes producing vibrant blues were often rare and expensive, making such colored clothing a symbol of privilege. The imagery lends itself to artistic representations and poetic expressions, providing a readily understandable visual of beauty and grandeur.
